Volume 136, Issue 38 e202409871
Zuschrift

Realization of Long-Life Proton Battery by Layer Intercalatable Electrolyte

Peilin Liang

Peilin Liang

School of Metallurgy, Northeastern University, Shenyang, 110819 P. R. China

State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, 110819, Liaoning P. R. China

Foshan Graduate School of Innovation, Northeastern University, Foshan, 528311, Guangdong P. R. China

These authors contributed equally to this work.

Contribution: Conceptualization (equal), Data curation (equal), Formal analysis (equal)

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Shuanlong Di

Shuanlong Di

Department of Chemistry, College of Science, Northeastern University, Shenyang, 110819, Liaoning P. R. China

These authors contributed equally to this work.

Contribution: Conceptualization (equal), Data curation (equal), Formal analysis (equal)

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Yuxin Zhu

Yuxin Zhu

Department of Chemistry, College of Science, Northeastern University, Shenyang, 110819, Liaoning P. R. China

Contribution: Data curation (supporting)

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Zhongbiao Li

Zhongbiao Li

School of Metallurgy, Northeastern University, Shenyang, 110819 P. R. China

State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, 110819, Liaoning P. R. China

Foshan Graduate School of Innovation, Northeastern University, Foshan, 528311, Guangdong P. R. China

Contribution: Data curation (supporting)

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Shulan Wang

Shulan Wang

Department of Chemistry, College of Science, Northeastern University, Shenyang, 110819, Liaoning P. R. China

Contribution: Supervision (equal)

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Prof. Li Li

Corresponding Author

Prof. Li Li

School of Metallurgy, Northeastern University, Shenyang, 110819 P. R. China

State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, 110819, Liaoning P. R. China

Foshan Graduate School of Innovation, Northeastern University, Foshan, 528311, Guangdong P. R. China

Contribution: Conceptualization (lead), Supervision (lead), Writing - review & editing (lead)

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First published: 02 July 2024
Citations: 3

Abstract

Proton batteries have attracted increasing interests because of their potential for grid-scale energy storage with high safety and great low-temperature performances. However, their development is significantly retarded by electrolyte design due to free water corrosion. Herein, we report a layer intercalatable electrolyte (LIE) by introducing trimethyl phosphate (TMP) into traditional acidic electrolyte. Different from conventional role in batteries, the presence of TMP intriguingly achieves co-intercalation of solvent molecules into the interlayer of anode materials, enabling a new working mechanism for proton reactions. The electrode corrosion was also strongly retarded with expanded electrochemical stability window. The half-cell therefore showed an outstanding long-term cycling stability with 91.0 % capacity retention at 5 A g−1 after 5000 cycles. Furthermore, the assembled full batteries can even deliver an ultra-long lifetime with a capacity retention of 74.9 % for 2 months running at −20 °C. This work provides new opportunities for electrolyte design of aqueous batteries.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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